Lighting device



Oct. 16, 1934. c. D. wow

LIGHTING DEVICE Filed June 4, 1934 BY WZ KW ATTORNEYS PatentedOct-16,1934

1,917,105 r mom-mo navrce Cornelius D. Wood, Brooklyn, N. Y., assignorto C. D. Wood Electric Company, Inc., New York, N. Y., a corporation ofNew York 9 Application June 4, 1934, Serial No. 728,811 1 cam (01.240-73) My invention relates to a new and improved lighting device.

One of the objects of my invention is to 'combine an electric lightingdevice, such as an ordinary incandescent bulb, with a receptacle plug.

Another object of my invention is to provide an ordinary receptacle plugwith a chamber made of suitable insulating material, said chamberserving as a housing for the socket of the electriclight bulb, and alsoserving to enclose and pro-' ted; the major portion of said bulb.

Another object of my invention is to provide a combination plug andlighting device, which can be inserted into any suitable electric outletor receptacle, in order to provide an emergency light.

Another object of my invention is to provide a device of this type whichshall be of very simple construction.

Other objects of my invention will be set forth in the followingdescription and drawing which 11 ustrates a preferred embodimentthereof, it being understood that the above statements of the objects ofmy invention are intended to generally explain the same without limitingit in any manner.

' Fig. 1 is a vertical sectional elevation of the improved device,showing the electric-light bulb in position.

Fig. 2 is an elevation of said device.

Fig. 3 is a bottom plan view of the' device, the insulating cover havingbeen removed.

Fig. 4 is a bottom plan view which illustrates another embodiment of thedevice.

' .-'i"- The device generally comprises a housin which can be made ofany suitable insulating material, such as porcelain or the like. Thismaterial-can be one of the well knownresins, such as a phenolformaldehyde condensation resin, which can be readily molded.

Said device 10 is provided with plug blades 21 and 22.

As shown at the bottom of Fig. l, the bottom of the housing is providedwith a-recess, and said recess is provided with a shoulder. 11' closuremember 29, made of any suitable insulating material, is provided withopenings through which the blades 21 and 22 may project; Said closuremember. 29 can be made of fibre or any other suitable insulatingmaterial, so that it can be bent to a sufiicient extent, although saidclosure member 29 has sufiicient rigidity to maintain it normally in theshape shown in Fig. 1. 1

Said closure member 29 can be slipped into position and it isfrictionally held upon the blades 21 and 22, so that no additional meansare necessary for holding said member 29 in position.

Referring to Fig. 3, the blade 22 is integral with an arcuate member 20.The blade 21 is integral with an arcuate member 19. Said members 19, m

20, 21 and 22 are made of any suitable metal,

such as brass or the like.

A rivet 17 connects the member 19 to a superposed metal blade 18 andsaid rivet 17 also passes through the bottom wall of the housing 10.

The device has been described with reference to its position shown inFig. 1, but of course the device can be used in any position.

A rivet 16 passes through the curved metal blade 20, and through aninner radial metal 7 blade 25. This blade 25 is suitably connected tothe lamp socket 13, which is made in the usual manner, so that saidmetal socket 115 is provided with a thread.

The metal blade 18 fits in a U-shaped recess of a rib 11a, which isintegral with the bottom wall of the housing 10.

A central rivet 23 passes through said blade 18, and the inner end ofsaid rivet 23 holds a .sheet of insulating material 24, such as mica orthe like.

The base 14 of the lamp is of the usual construction, and said lamp 12is provided with a filament of the usual type, one end of said filamentbeing connected to the metal base 14, and the other end of said filamentbeing connected to the central contact 15.

The central contact 15 abuts the inner end of the rivet 23, when thelamp 12 has been screwed into position.

The circuit of the lamp is as follows, when the blades 21 and 22 areinserted into a suitable plug receptacle, so that said blades 21 and 22are connected to the terminals of a suitable source of direct oralternating current:

Assuming that the blade 21 is connected to the plus side of the current,during a half-cycle, the current passes through blade 21, 'arcuate metalblade 19, outer radial blade 18, rivet 23, to the central contact 15,through the filament of the lamp 12, to the base 14, to thesocket 13,through metal blade 25, through rivet 16, through arcuate blade 20, andthen to the plug blade 22.

The conducting parts of the device are all made of any suitable metal. Y

The closure member 29 firmly closes the chamher which is provided belowthe bottom wall 11 of the housing, in order to prevent any shortcircuits.

The arcuate blades 19 and 20 can have their no 2 curved surfacesabutting the adjacent cylindrical wall of said chamber, a slight spacebeing shown in Fig. 3 in order to more clearly illustrate said parts.

Likewise, the blades 21 and 22 abut the adjacent legs of the rib 11a, ofthe bottom wall 11. This produces a device in which the parts areprevented from shifting, with the use of a minimum number of rivets orother fastening parts.

For example the blade 19 is prevented from turning relative to the rivet1'7, due to the contact of the plug blade 21 with the adjacent leg ofthe rib 11a, and due to the contact of the curved part of the blade 19,with the adjacent cylindrical wall of the housing 10.

The blade 18 flts'snugly between the legs of the rib 11a and said bladeis also held in position by the rivets 17 and 23.

The blade 20 is similar in construction and location to the blade 19 sothat it is firmly held in position by the use of a single rivet 16.

In the embodiment shown in Fig. 4, the blades 31 and 32 correspond tothe blades 21 and 22. Said blades 31'and 32 have integral extensions 31aand 32a. The rivet 30 corresponds to the rivet 16 and it holds themember 31a inposition. The rivet 23a corresponds to the rivet 18. Saidmembers 31a and 3211 are located in a depression which is locatedbetween the ribs 33 and 34 and the side walls of said members 31a and32a substantially abut the adjacent surfaces of said ribs 33 and 34.

A rib separates the blade 31 from the extension 32a.

Theprinciple of the device shown in Fig. 4 is substantially the same asthat shown in Figs. 1-3, but the device shown in Fig. 4 permits acheaper construction. The ribs 33 and 34 prevent the turning of themembers 31a and 3241, so that each of the plug blades can be firmly heldin position, by means of a single rivet.

The ribs 33, 34 and 35 are integral with the bottom wall 11 which ismade of porcelain or other suitable insulating material.

1,977,105 1 do not wish to be limited to the details of the preferredembodiment which has been described as illustrative-of the invention, asnumerous changes and omissions can be made without departing from thespirit of the invention.

The housing 10 substantially encloses the bulb 12, and it may completelyenclose said bulb although I prefer to have a part of the bulb 12projecting from said housing 10. By substantially enclosing the filamentof the lamp in the casing, as shown in Fig. 1, a direct glaring light issubstantially eliminated.

By making said housing of porcelain or of a suitable insulatingresin orthe like, preferably colored, and which is more or less translucent,

a soft and diffused light is secured, so that'the device can be used insick rooms, for example, by plugging the light into an outlet which isnear the floor. This will give a soft general illumination,- withoutdisturbing the patient. However, the housing may be made of anymaterial.

As shown in Fig. 1, the lamp 12 fits closely within the housing orcasing 10. Likewise the interior wall of the housing 10 is substantiallycylindrical. Hence the housing 10 does not act as a reflector to producea general bright illumina tion. On the contrary, the major portion ofthe light passes through the translucent wall of the housing 10 so as togive a general soft and diffused light.

I claim:

A lighting device including a cup-shaped housing of translucentinsulating material having a bottom wall and an integral andsubstantially cylindrical portion, a lamp socket within the subwall, alamp in said socket, plug blades rigidly mounted on the outer sides ofsaid wall and electrically connected to said socket, said lamp fittingclosely within said cylindrical portion and having its filament locatedsubstantially entirely within. the outer end of the substantiallycylindrical port-ion, whereby a soft and diflused light is produced.

comimms D. woon.

no stantially cylindrical portion mounted on said

